JP2001118362A - Optical disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of accessing times in the case of inputting the audio of a scene and performing after-recording from an optical disk on which video audio data are recorded while watching roduced video. SOLUTION: A reproducing head collectively reads the video audio data equally to or more than fixed data quantity, and an error correction circuit performs error correction, a video decoder decodes video data to reproduce video A user watches the reproduced video, inputs audio data in a multiplexing circuit, multiplexing the audio data with the read video audio data to replace the audio data, and stores the audio data in a 1st timing memory. The error correction encoder attaches an error correction code to the video audio data read from the 1st timing memory, and the video audio data with the error correction code attached are stored in a 2nd timing memory. The video audio data are read from the 2nd timing memory and collectively recorded on the optical disk by a recording head equally to or more than the fixed data quantity.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital optical disk device for digitally recording video data and audio data, an optical disk device applied to a digital hard disk device and the like.

[0002]

2. Description of the Related Art Conventionally, in an optical disk apparatus for digitally recording video data and audio data, after recording video data and audio data, another audio data is recorded later corresponding to the video data. There has been proposed an optical disc device that enables after-recording (after-recording). FIG. 8 shows a block diagram of one example. In FIG. 8, an ECC (Error Correction Code) block data including audio data is read from an optical disc (Disc) 1 by a reproduction head (PB) 2, and an error correction circuit (ECC) 3 performs error correction in ECC block units. The error correction circuit (ECC) 3 outputs error-corrected data to the multiplexing circuit (MUX) 8. The user should take care of the appropriate timing and use the audio input terminal (Audio In)
Input audio from 6. The input audio data is MPEG-encoded by an audio encoder (Audio ENC) 7.
1 Layer II or the like is compressed, and the multiplexing circuit (M
UX) 8. The multiplexing circuit (MUX) 8 replaces the audio data input from the audio encoder (Audio ENC) 7 with the ECC block data including the audio data input from the error correction circuit 3 to perform error correction. Encoder (ECE
NC) 10. Error correction encoder (ECE
The NC (NC) 10 adds an error correction code to the newly generated ECC block data, and generates a recording head (RE).
C) The recording is performed on the optical disc (Disc) 1 by controlling the overwriting of the old ECC block by 12).

[0003] In such a conventional optical disk device, although audio dubbing can be realized, a user must input audio without watching video. That is, even when a narration is added to a video taken by a video camera, it becomes impossible to control what audio is dubbed for which video of the video. To deal with such a problem, Japanese Patent Application Laid-Open No. H11-168693 discloses that while reproducing video on an optical disk, audio data for after-recording is generated at the same time, and this audio data is combined with video data and recorded on the optical disk. A technology to do this has been proposed. In addition, a technique for additionally recording only audio data on an optical disk has been proposed.

[0004]

Incidentally, the optical disk has the concept of a minimum editing unit and continuous recording data. For example, when video and audio data are recorded on an optical disc and the operation of erasing a part is repeatedly performed, if the amount of remaining data to be reproduced is too small on average, the number of accesses increases and the data is continuously reproduced. (Seamless playback). Therefore, in order to enable seamless reproduction even when access is repeated, data must be recorded in a certain amount or more without fail, and the certain minimum data amount is called a minimum editing unit. Also, in consideration of the condition of the minimum editing unit, a block of data recorded collectively is referred to as continuous recording data. In the above-mentioned conventional optical disk apparatus, since the after-recording is executed while ignoring the minimum editing unit and continuous recording data, the number of accesses between continuous data areas increases, access takes time, recording / reproduction cannot be performed in time, and the worst audio There is also a possibility that the dubbing operation will be error / stopped.

An object of the present invention is to solve the above-mentioned problems,
It is an object of the present invention to provide an optical disk device that can shorten the access time during post-recording and can reliably record audio data on an optical disk.

[0006]

SUMMARY OF THE INVENTION The present invention relates to an optical disk on which video and audio data are recorded in a group of a predetermined amount or more, means for reading and reproducing data recorded on the optical disk, and audio data for recording. Means for recording video and audio data including the audio data on the optical disc, and when the fixed amount of data is referred to as a continuous data area, the video recorded on the optical disc is referred to as a continuous data area. At the time of audio post-recording in which audio data is recorded while reproducing data, a means for recording data in the same continuous data area and recording data in the same continuous data area as much as possible is provided. Further, the video / audio data is recorded on the optical disk in ECC block units and reproduced in ECC block units, and the continuous data area is constituted by a plurality of ECC block units.

[0007] In the optical disk apparatus of the present invention, at the time of audio dubbing in which audio data is recorded while reproducing video data recorded on the optical disk, reproduction of data in the same continuous data area and reproduction of data in the same continuous data area are performed. By providing a unit that performs recording as much as possible, dubbing corresponding to the minimum editing unit and continuous recording data can be realized, so that the number of accesses between continuous data areas can be suppressed. Therefore, the access time can be reduced, and appropriate recording and reproduction can be realized.

[0008]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of an embodiment of the optical disk device of the present invention. In the same manner as in the conventional optical disk device, the optical disk (Disc) 1 is moved to the reproducing head (P).
B) Data is read out by 2 and an error correction circuit (EC
C) Error correction is performed in units of ECC blocks by 3 and error-corrected data is output. The output video data is converted by a video decoder (Video DEC) 4 into M
PEG-2 decoding is performed, and a video output terminal (Video
Out) Output to 5. At the same time, the ECC block including the audio sector is input to the multiplexing circuit (MUX) 8 and stored in the first timing memory (Timing Memory 1).

On the other hand, the user operates the video output terminal (Vi
The video data output from the (deo Out) 5 is reproduced, and audio (sound) is input from the audio input terminal (Audio In) 6 at a proper timing while watching the reproduced video.
The input audio data is sent to an audio decoder (Audio EN
C) MPEG-1 Layer II compression is performed by 7 and input to the multiplexing circuit (MUX) 8. Multiplexer (MUX)
In 8, the input audio data and ECC block data including audio data to be replaced by the audio data are read out from the first timing memory (Timing Memory 1) 9, the audio data is replaced, and an error correction encoder ( ECEN
C) Output to 10. Error correction encoder (ECEN
C) 10, an error correction code is added to the new ECC block data, and a second timing memory (Timing M
emory 2) Store to 11. Finally, the error correction encoder (ECENC) 10 reads the ECC block data to which the new error correction code has been added from the second timing memory (Timing Memory 2) 11 at the recording timing, and the recording head (REC) 12 Recording is performed on (Disc) 1 while controlling to overwrite the old ECC block.

Using the optical disk apparatus having the above-described configuration, operations required for realizing the present invention, in particular, reading video and audio data over all ECC blocks from the optical disk 1 and checking the video An example will be described in which audio is input and audio data is rewritten at the same time as the ECC block containing the audio data, in other words, only the audio data portion is rewritten, thereby dubbing the audio data. In FIG. 2, a unit separated by a vertical line is an ECC block,
One ECC block is 32768 bytes. In FIG.
The ECC block number is also shown. The recording / reproducing operation is always executed in ECC block units. One sector is 2048 bytes, and one ECC block is composed of 16 sectors.

The first line (Data) in FIG. 2 shows video / audio data. The portion described as “Video” is video data. Video data is, for example, MPEG-
2 and GOP (Group of P
ictures) are arranged in units. Here, for example, 1G
An OP is composed of 15 frames, and if one frame is (1.001 / 30) sec, one GOP is (1.001 / 2)
) Sec. GOP video data is aligned on a sector-by-sector basis, but usually starts in the middle of an ECC block and ends in the middle of an ECC block. FIG.
In this example, GOP0 and GOP3 are composed of about 5 ECC blocks, and GOP1 and GOP2 are composed of about 4 ECC blocks.

In the video / audio data, a portion described as "Audio" with shading is audio data. Audio data is, for example, MPEG-1 Layer II
, And audio data corresponding to one GOP is arranged after video data of one GOP. However, in the case of MPEG-1 Layer II compression, the compression operation is to be performed in AF (Audio Frame) units, and thus the arrangement is also performed in AF units. However, 1A
F is 24 msec and is not synchronized with the video GOP. Therefore, audio data corresponding to one GOP is arranged such that 21 AF is 41 GOP and 20 AF is arranged in 7 GOP, so that the total 48 GOP cycle appears repeatedly. However, since audio data corresponding to a GOP is also aligned in sector units, if the audio bit rate is, for example, 256 kbps, 1 AF is 768 bytes. Therefore, in the case of 21AF, 16128 bytes, 20A
15360 bytes for F and 20 for 21AF
Also in AF, they are arranged in eight sectors.
The audio data of eight sectors may be arranged in one ECC block or arranged between two ECC blocks. FIG. 2 shows a case where audio data is arranged all over two ECC blocks. . The following description is based on the assumption that audio data of 8 sectors is 1 data.
The operation is the same even when the case where the signal is arranged in the ECC block is added.

The timing of reading data from the optical disk is shown in PB on the second row in FIG. Here, "0
“R” and “1R” indicate the reproduction of the ECC block 0 and the reproduction of the ECC block 1.
The reason that there is a free time of 2 ECC blocks between “4R” and “5R” is to secure recording timing in advance.

Similarly, the output timing of the error correction circuit is shown in ECC Out of the third row. Here, PB
Shows the timing for performing error correction after data reproduction and outputting the result. Also, Video Out on the fourth line
2 shows the timing of outputting video data to a monitor after a decoding operation according to MPEG-2. Regarding this timing, in FIG.
Although an example in which a CC block is required is shown, an actual device usually requires a longer time.

Further, the user inputs audio data to MUX In on the fifth line while watching Video Out,
The figure shows that the input audio data is encoded according to MPEG-1 Layer II, thereby replacing the audio data part of ECC Out.
In FIG. 2, the audio data portion before replacement is shown by light shading, and the audio data portion after replacement is shown by dark shading. In addition, although an example is shown in which the encoding operation requires two ECC blocks, an actual device usually requires a longer time. The ECC block in which the data is replaced is an ECC block including audio data. In the example of FIG.
Blocks 0, 1, 5, 6, 9, 10, 13, and 14.

The REC on the sixth line indicates the recording timing of the ECC block. 0 at the same timing
At W, 1W, 5W, 6W, 9W, and 10W, an ECC block in which audio has been replaced is recorded. 7
In the Disc on the line, the recording / reproducing timing on the optical disk is summarized. R indicates reproduction and W indicates recording. Also, J
At the timing indicated by P, access within a zone usually occurs, and at worst, access between zones occurs. By repeatedly performing recording, access, reproduction, and access at such timing, the user can realize post-record editing in real time while watching the video.

Here, continuous recording data, which is a block of data recorded collectively in consideration of the minimum editing unit and the conditions of the minimum editing unit, will be considered. That is, in the jump between continuous recording data, the worst case full stroke access must be considered, and the access time becomes long. Therefore, continuous recording data is considered in the method of FIG.

FIG. 3 shows how an access occurs when continuous recording data 0 up to the ECC block 7 and continuous recording data 1 after the ECC block 8. A normal jump is indicated by JP, and a jump between continuous recording data areas is indicated by EJP. In FIG. 3, once between 7R and 8R,
EJPs are generated four times at the time of transition to and return to 0W and 1W, and four times at the time of transition and return to 5W and 6W. This EJP
Since the full stroke access time must be taken into account and the time becomes long, it is important to reduce the number of EJPs as much as possible in order to stably realize real-time post-recording. If the number of EJPs increases, access takes time, recording / reproduction cannot be performed in time, and the worst-case real-time post-recording operation may be erroneously stopped.

FIG. 4 shows an example in which the number of EJPs can be reduced by changing the timing in FIG. In the figure, recording of 0W, 1W, 5W, and 6W is continuously performed. As a result, EJP is switched between 0R, 1W, 5W, and 6W once between 7R and 8R, and 2 times when returning.
EJP has occurred three times. In this manner, by performing recording in the same continuous recording data as continuously as possible, the number of EJPs can be reduced.

FIG. 5 is a timing chart showing the timing of FIG. 4 applied to the after-recording of FIG. The first line (Data) in the same figure shows video and audio data. Continuous recording data 0, E up to ECC block 7
The CC block 8 and thereafter are set as continuous recording data 1. The timing of reading data from the optical disc is shown in PB on the second row. There are two ECC blocks between 4R and 5R, and four ECC blocks between 13R and 14R, and the recording timing is secured in advance. 3rd line EC
C Out indicates the output timing of the error correction circuit. 4
In the line Video Out, the video data is MPEG-2
After the decoding operation according to the above.

Also, the user inputs audio data to MUX In on the fifth line while watching Video Out,
The figure shows that the input audio data is encoded according to MPEG-1 Layer II, thereby replacing the audio data part of ECC Out.
The REC on the sixth line indicates the recording timing of the ECC block. 0W, 1W, 5W, 6W, 9W, 10W
, The ECC block in which the audio is replaced is recorded. Here, 0 W, 1 W, 5 W, and 6 W to be subjected to post-recording in the continuous recording data 0 are continuously recorded in order to minimize the number of accesses between the consecutive recording data. The Disc on the seventh line summarizes the recording and playback timing on the optical disc. By performing post-recording at such a timing, EJP is suppressed to three times, and a stable real-time post-recording operation becomes possible.

FIG. 6 shows an example in which reproduction of all ECC blocks, replacement of audio data of ECC blocks including audio, and recording of ECC blocks including audio are all performed in one continuous recording data. Data on the first line indicates video / audio GOP data. In the figure,
A vertical line in the timing indicates a break of GOP data. The continuous recording data 0 is from the head of GOP0 to the middle of GIP30. In FIG. 6, Extent0 is displayed. Further, the part from the middle of the GOP 30 to the middle of the GOP 60 is defined as the continuous recording data 1. In FIG. 6, Extent
It is displayed as 1. Then, video data is arranged from the beginning to the latter half of each GOP, and audio data indicated by shading is arranged at the end of the GOP.

The timing of reading data from the optical disk is shown in PB on the second row. The reading of all the data in the continuous recording data 0 and the reading of all the data in the continuous recording data 1 are performed continuously at a time. After reading all the data in the continuous recording data 0 or after reading all the data in the continuous recording data 1, an idle time is set, and the recording timing is secured in advance. ECC Out of the third row indicates the output timing of the error correction circuit. MPE of video data in MUX In of 4th line
After decoding operation according to G-2, output to monitor (Vide
o Out), the user inputs audio data while watching it, and the input audio data is MPEG-1
Encoded according to Layer II, so that ECC O
FIG. 14 shows a diagram in which the audio data portion of ut has been replaced. Note that there is a delay time of about 1 second between PB and MUXIn.

The REC on the fifth line shows the recording timing of GOP data. 0W / 29W and 30W ~
At 59W, ECC block data in which audio has been replaced is recorded. That is, the recording data of each of the continuous recording data 0 and the continuous recording data 1 is continuously recorded at a time. Disc 6 shows the recording / reproduction timing on the optical disc. By performing post-recording at such a timing, EJP is suppressed to a total of two times at the beginning and end of continuous recording data, and a stable real-time post-recording operation becomes possible. However, when performing the post-recording operation in the method of FIG.
Disk access is stopped for the delay time of In, and the disk operation efficiency is slightly reduced. Therefore, regarding the record,
A method that is performed after reproducing the to-be-recorded continuous data can be considered.

FIG. 7 shows the recording operation of the continuous recording data in the after-recording operation at the next continuous recording data read timing after the continuous recording data is read out, after all the video / audio data of the next continuous recording data have been read out. FIG. Also in the figure, the vertical line in the timing indicates the break of GOP data. Video / Audio G in Data of the first line
Indicates OP data. Continuous recording data 0 is defined from the head of GOP0 to the end of GOP29. The continuous recording data 1 is from the head of the GOP 30 to the middle of the GOP 60. In the figure, Extent1 is displayed. GOP60
From the middle of the GOP 90 to the middle of the GOP 90 is the continuous recording data 2. Note that in FIG. 7, Extent 2 is displayed. GOP
The video data is arranged from the beginning to the latter half, and the shaded audio data is arranged at the end of the GOP.

The timing of reading data from the disk is shown in PB on the second row. The reading of all the data in the continuous recording data 1 and the reading of all the data in the continuous recording data 2 are continuously performed at once. After reading all the data in the continuous recording data 1 or after reading all the data in the continuous recording data 2, an idle time is set, and the recording timing is secured in advance. ECC Out of the third row indicates the output timing of the error correction circuit. In the 4th line MUX In, the video data is
After decoding operation according to EG-2, output to monitor (Vi
deo Out), the user inputs audio data while watching it, and the input audio data is MPEG-
1 Encoded according to Layer II, so that ECC
The figure shows the audio data portion of Out replaced. In addition, between PB and MUX In, 1
There is a delay time of around second.

The REC on the fifth line indicates the recording timing of GOP data. 0W ~ 29W, and 30W ~
At 59W, ECC block data in which audio has been replaced with the immediately preceding continuous recording data is recorded. That is, 30R to 60R in the continuous recording data 1
Is read, 0W to 29W is recorded. After 60R to 90R are read from the continuous recording data 2, recording of 30W to 50W is performed. 6th line
Disc summarizes the recording and playback timing on the optical disk. By performing the post-recording at such a timing, the EJP can be suppressed to a total of two times, that is, the head and the last part of the continuous recording data and the position where the recording is switched from the reproduction to the recording, and the stable real-time post-recording operation can be performed.

Here, since the continuous recording data has a variable length,
When performing reproduction / recording processing in units of continuous recording data by the method shown in FIGS. 6 and 7, a large amount of memory or processing time is required for large continuous recording data. Therefore, there is a method in which the processing in units of continuous recording data shown in FIGS. 6 and 7 is performed in the minimum editing unit described above. That is,
The extent shown in FIGS. 6 and 7 is the minimum editing unit. Thus, if the minimum editing unit is, for example, 10 MB, Exte
nt is 10 MB, and a certain amount of memory or processing time can be realized.

However, since the continuous recording data is not a multiple of the minimum editing unit, the last part of the continuous recording data is shorter than the minimum editing unit. In this case, Exte
nt is defined as follows. (A1) Extent is a data amount equal to the minimum editing unit except for the last part of continuous recording data. (A2) The value of the last part of the continuous recording data is equal to or less than the minimum editing unit. However, the same time as that of the normal unit is allocated to the time for performing data reproduction and data recording processing for post-recording. With this method, the dubbing shown in FIGS. 6 and 7 can be realized.

Alternatively, Extent is defined as follows. (B1) When the continuous recording data is a multiple of the minimum editing unit,
Extent has a data amount equal to the minimum editing unit. (B2) When the continuous recording data is not a multiple of the minimum editing unit, Extent has a data amount equal to the minimum editing unit except for the last portion of the continuous recording data and the minimum editing unit immediately before the last part. Regarding the last part and the minimum edit unit immediately before it, Extent is the data amount obtained by adding the data amount of the last part and the immediately preceding minimum edit unit (data amount less than twice the minimum edit unit). And With this method, the dubbing shown in FIGS. 6 and 7 can be realized.

On the other hand, in order to reduce the amount of memory or the processing time, there is also a method of performing processing in units of continuous recording data shown in FIGS. 6 and 7 in units of one or a plurality of GOPs. That is, the extent shown in FIGS. 6 and 7 is one or more GOPs, that is, the processing GOP. As a result, the amount of memory or the processing time can be further reduced as compared with the case where the minimum editing unit is set.

However, since the continuous recording data is not always a multiple of the processing GOP at this time, the last part of the continuous recording data is shorter than the processing GOP. In this case, Extent is defined as follows. (C1) Extent has a data amount equal to the processing GOP except for the last part of the continuous recording data. (C2) Regarding the last part of the continuous recording data, the processing GO
The value should be equal to or less than P. However, the same time as that of the normal unit is allocated to the time for performing data reproduction and data recording processing for post-recording. With this method, the dubbing shown in FIGS. 6 and 7 can be realized.

Alternatively, Extent is defined as follows. (D1) When continuous recording data is a multiple of the processing GOP, Ex
The tent has a data amount equal to the processing GOP. (D2) When the continuous recording data is not a multiple of the processing GOP, Extent has a data amount equal to the processing GOP except for the last part of the continuous recording data and the processing GOP immediately before the last part. Regarding the last part and the processing GOP immediately before it, Extent is the last part and the processing GOP immediately before that.
(A data amount less than twice the processing GOP). With this method, the dubbing shown in FIGS. 6 and 7 can be realized.

While one embodiment of the present invention has been described above, in the present invention, one ECC block is 327.
Other than 68 bytes, one sector may be other than 2048 bytes. Also, one ECC block may be composed of other than 16 sectors. The video data is MPEG-
It may be compressed by other than 2, or may be uncompressed.
Also, one GOP may be composed of other than 15 frames, and even if one frame is other than (1.001 / 30) sec, 1 GOP
OP may be other than (1.001 / 2) sec. Even if GOP video data is not aligned in sector units,
The alignment may be performed in GOP units. The audio data may be compressed by means other than MPEG-1 Layer II or may be uncompressed. Also, 1 AF may be other than 24 msec, and may be synchronized with the GOP or not. Further, the audio bit rate may be other than 256 kbps, and may be arranged in a sector number other than 8 sectors. The minimum editing unit may be a value other than 10 MB.

Also, the configuration shown in FIG. 1 can be appropriately changed. In particular, regarding the semiconductor memories forming the first and second timing memories 9 and 11, the HD
A D (hard disk) can be mounted as an alternative.

[0036]

As described above, the present invention provides a video / video
When playing audio data on an optical disk on which audio data is recorded in a certain amount of data or more while playing back video data recorded on the optical disk, the same as playing data in the same continuous data area during audio dubbing A means for recording data in the continuous data area as much as possible is provided, so that post-recording corresponding to the minimum editing unit and continuous recording data can be realized, and the number of accesses between continuous data areas can be suppressed. Become. Therefore, the access time can be reduced, and appropriate recording and reproduction can be realized. In particular, according to the present invention, in an optical disc on which video / audio data is recorded in ECC block units,
Suppressing the above-mentioned number of accesses by reading video / audio data over C blocks, inputting audio while checking video, and simultaneously rewriting video / audio data of ECC blocks containing audio data. Becomes possible.

[Brief description of the drawings]

FIG. 1 is a block diagram of an optical disk device of the present invention.

[Figure 2] Input audio for dubbing while checking the video,
5 is a timing chart when recording on a disk in real time.

FIG. 3 is a timing chart when the concept of continuous recording data exists in FIG.

FIG. 4 is a timing chart when the number of jumps between continuous recording data is reduced in consideration of continuous recording data in FIG.

FIG. 5 is a timing chart when the number of jumps between continuous recording data is reduced in consideration of the continuous recording data in FIG.

[Fig. 6] Extent of continuous recording data or minimum editing unit
FIG. 6 is a timing chart when performing post-recording at a stroke after reading in units of continuous recording data, indicated by 0 and Extent1.

[Fig. 7] Extent of continuous recording data or minimum editing unit
1 is a timing chart when dubbed recording is performed on continuous recording data one block before after reading in units of continuous recording data, indicated by Extent2.

FIG. 8 is a block diagram of a conventional optical disk device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Optical disk 2 Playback head 3 Error correction circuit 4 Video decoder 5 Video data output terminal 6 Audio data input terminal 7 Audio encoder 8 Multiplexer 9 First timing memory 10 Error correction encoder 11 Second timing memory 12 Recording head

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (reference) G11B 27/02 K F term (reference) 5D044 AB06 AB07 CC04 DE12 DE96 5D090 AA01 BB04 CC01 CC02 CC05 CC16 DD03 DD05 EE01 FF30 FF31 HH01 LL09 5D110 AA17 AA26 AA27 AA29 BB06 BB08 CA05 CA06 CB04 CB06 CD15 CK02 CK24 CK28

Claims (13)

[Claims] 1. An optical disk on which video / audio data is collectively recorded in a fixed amount of data or more, means for reading and reproducing data recorded on the optical disk, and inputting audio data to be recorded to the optical disk. Means for recording video / audio data including the audio data in the optical disk device, when the fixed data amount is called a continuous data area, the audio data is reproduced while reproducing the video data recorded on the optical disk. An optical disc apparatus comprising means for performing recording of data in the same continuous data area and recording of data in the same continuous data area as much as possible at the time of audio post-recording. 2. The video / audio data is EC
2. The optical disc apparatus according to claim 1, wherein the continuous data area is recorded on the optical disc in C block units and reproduced in ECC block units, and a plurality of ECC block units are united. 3. A means for reading and reproducing data recorded on the optical disc, means for reading the video / audio data from the optical disc, means for performing error correction on the read data, and means for performing error correction on the read data. Means for outputting and reproducing video from data, means for recording the video / audio data, means for inputting audio for dubbing and outputting audio data for recording, and audio for an ECC block containing the audio data. Means for replacing only the data portion and adding an error correction code, and then recording the data on the disk in ECC block units, wherein at least the after-recording operation by the means for recording the after-recording sound is collectively performed for each of the continuous data areas. 3. The optical disk device according to claim 2, wherein the operation is performed. 4. An after-recording operation for replacing only the audio data of all ECC blocks including the audio data and recording the data on the optical disk in ECC block units is performed in the next continuous data area after reading the continuous data area data. 3. The optical disk apparatus according to claim 2, wherein all the video / audio data in the continuous data area are read out and then read all at once. 5. When a value obtained by limiting the minimum value of the continuous data area is called a minimum editing unit, data reproduction from the optical disk, replacement of the audio data, and post-recording on the optical disk are performed in the minimum editing unit. The optical disk device according to any one of claims 2 to 4, wherein: 6. The reproduction of data from the optical disc, the replacement of the audio data, and the after-recording on the optical disc are performed in minimum editing units except for the last part of the continuous recording data. 6. The optical disk device according to claim 5, wherein the processing is performed in a unit of a minimum editing unit or less. 7. The reproduction of data from the optical disc, the replacement of the audio data, and the after-recording on the optical disc are performed in the minimum editing unit when the continuous recording data is a multiple of the minimum editing unit, and the continuous recording data is minimized. When the editing unit is not a multiple of the editing unit and is not the last part of the continuous recording data and the minimum editing unit immediately before the last unit, the editing is performed in the minimum editing unit. 6. The optical disk apparatus according to claim 5, wherein the data amount is obtained by adding the data amount of the last part and the data unit of the previous minimum editing unit when the unit or the minimum editing unit immediately before the unit is used. 8. The apparatus according to claim 2, wherein data reproduction from the optical disc, replacement of the audio data, and post-recording on the optical disc are performed in units of one or more GOPs (processing GOPs). 13. An optical disk device according to 9. The processing GOP performs data reproduction from the optical disc, replacement of the audio data, and recording of the video / audio data on the optical disc except for the last part of the continuous recording data. 9. The optical disk device according to claim 8, wherein the last part of the processing is performed in the processing GOP or lower. 10. The data reproduction from the optical disk, the replacement of the audio data, and the after-recording on the optical disk are performed by the processing GOP when the continuous recording data is a multiple of the processing GOP.
Performed in the processing GOP when it is not a multiple of the OP and is not the final part of the continuous recording data and the processing GOP immediately before it, and the continuous recording data is not a multiple of the processing GOP,
And the last part G of the continuous recording data or the preceding part G
9. The optical disk apparatus according to claim 8, wherein the operation is performed in a unit of a data amount obtained by adding the data amount of the final part and the immediately preceding processing GOP at the time of OP. 11. The optical disk device according to claim 1, wherein said means for recording audio data includes a memory for holding audio data to be recorded. 12. The memory according to claim 1, wherein the memory comprises a first memory for configuring the ECC block by adjusting the timing of the video data and the audio, and a second memory for adjusting the recording timing. The optical disk device according to claim 11, wherein: 13. The optical disk device according to claim 1, wherein said memory is constituted by a semiconductor memory or a hard disk.